You can stay more than 180 days in a year as many do. You can stay a max of 180 days without extending. You extend via an IO or a border hop which is the most popular way
No requirement to show funds or proof of activity currently. You can be asked though by an IO regarding your purpose of entry. You have a multi entry visa come and go as you please.
😲 Surprising requests. Pics of your workplace?? The financial requests are excessive.. Anyway kudos to you for sticking with it ...Well deserved Congrats getting the DTV!
The DTV is active from date of issue. If issued in Dec and you travel April, you have lost 4 months of it. London approves DTVS fairly quickly often within 7 business days. You could wait until April to apply/after your current visa ends.
BrightSunflower8975 I have seen flight reservation only needed posts before for The Netherlands. If they actually want to see a confirmed flight ticket, they tend to ask later for it. You can email them to confirm.